EP0108886A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Silicone-containing hard contact lens materials having increased oxygen permeability
Assignee: Novartis AG
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Filing: 1983-09-15
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Granted: —
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Expires: 2003-09-15
Abstract
Abstract This invention relates to an improved hard contact lens polymeric material comprising a siloxane-based ester monomer, solely, or in combination with methacrylic acid-derived cross-linking agents, alkanol esters, and/or hydrophilic monomers. Hard contact lenses made from these polymeric materials have an increased oxygen permeability and surface wettability and thus have potential use in extended-wear lens applications.
Inventors
- 👤 Albert R. Leboeuf
- 👤 Helmut K. Singer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 20:28
CPC Classifications
C; C08; C08F; C08F230/00; C08F230/04; C08F230/08; G; G02; G02B; G02B1/00; G02B1/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
63 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of: (a) 15% to 40% by weight of tris(trimethylsiloxyl)methacryloxypropylsilane (TRIS), having the following structural formula: (b) 10% to 80% by weight of at least one cross-linking agent which is a derivative of methacrylic acid, and; (c) 0% to 60% by weight of an alkanol ester and/or vinyl benzene and/or a hydrophilic monomer.
Claim 2
Dependent Claim
63 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of: (a) 15% to 40% by weight of tris(trimethylsiloxyl)methacryloxypropylsilane (TRIS), having the following structural formula: (b) 10% to 80% by weight of at least one cross-linking agent which is a derivative of methacrylic acid, and; (c) 0% to 60% by weight of an alkanol ester and/or vinyl benzene and/or a hydrophilic monomer.
Claim 3
Dependent Claim
37 words
A polymerization product in accordance with claim 1 wherein said cross-linking agents in (b) are selected from the class consisting essentially of allyl methacrylate, ethylene glycol dimethacrylate, 2-allyloxyethyl methacrylate, PEGDMA-600, DMA/Q4-3667, vinyl methacrylate and triethylene glycol dimethacrylate.
Claim 4
Dependent Claim
52 words
A polymerization product in accordance with claim 1 wherein said alkanol ester in (c) is selected from the class consisting essentially of methyl methacrylate, n-butyl methacrylate, cyclohexyl methacrylate, phenyl ethyl methacrylate, and n-propyl methacrylate and said vinyl benzene is selected from a member of the group of vinyl benzene and divinyl benzene.
Claim 5
Dependent Claim
27 words
A polymerizatiion product in accordance with claim 1 wherein said hydrophilic monomer in (c) is selected from the class consisting essentially of 2-hydroxyethyl methacrylate and n-vinyl pyrrolidone.
Claim 6
Dependent Claim
19 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of bis(methacryloxypropyl)octamethyltetrasiloxane (BMOS) having the following structural formula:
Claim 7
Dependent Claim
19 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of bis(methacryloxypropyl)octamethyltetrasiloxane (BMOS) having the following structural formula:
Claim 8
Dependent Claim
19 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of bis(methacryloxypropyl)tetramethyldisiloxane (MOTS) having the following structural formula:
Claim 9
Dependent Claim
19 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of bis(methacryloxypropyl)tetramethyldisiloxane (MOTS) having the following structural formula:
Claim 10
Dependent Claim
19 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of methacryloxypropylpentamethyldisiloxane (MPPS) having the following structural formula:
Claim 11
Dependent Claim
19 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of methacryloxypropylpentamethyldisiloxane (MPPS) having the following structural formula:
Claim 12
Dependent Claim
20 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of tris(trimethylsiloxy)methacryloxypropargyl silane (TRIG) having the following structural formula:
Claim 13
Dependent Claim
20 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of tris(trimethylsiloxy)methacryloxypropargyl silane (TRIG) having the following structural formula:
Claim 14
Dependent Claim
21 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of 1,7 Bis(methacryloxypropargyl)octamethyl tetrasiloxane (MOTG) having the following structural formula:
Claim 15
Dependent Claim
21 words
An oxygen-permeable, hard, machinable contact lens material comprising the polymerization product of 1,7 Bis(methacryloxypropargyl)octamethyl tetrasiloxane (MOTG) having the following structural formula:
References Cited (Backward Citations)
No citation records indexed.
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